The LTSE wants to give startups all the benefits of being public whilst encouraging long-termism through tenured voting and other gimmicks.

It seems that Zuckerberg has already achieved this however by retaining voting rights. That hasn't stopped investors from pouring money in to FB.

Why would any founder then decide to list on LTSE rather then just implement a dual class structure? Perhaps if market conditions were to change, but right now there appears to be no shortage of investor cash looking for a home.